Polini is one of the big names in 50cc scooter tuning, and is also one of the leading manufacturers of tuning parts for Vespa, modern and vintage. Cylinders, intake manifolds, exhausts, air filters, carburetors, crankshafts and more - everything you need to boost the performance of your Classic Vespa.

This 60mm diameter cylinder will raise displacement to a total of 165cc while allowing to retain the original crankshaft, and increased displacement leads to higher top speed. Port timings are designed for racing, with an impressive boost in torque throughout the entire rpm range.

A 3-ring low-friction piston and a high-compression cylinder head are included. Cooling properties are excellent, so this cylinder allows for intense racing use.

And, typical of Polini, everything is manufactured according to very high quality standards.